The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2007
Filed:
Mar. 20, 2003
Rian Reyneke, Katy, TX (US);
Michael Foral, Aurora, IL (US);
Christos G. Papadopoulos, Naperville, IL (US);
Jeffrey S. Logsdon, Naperville, IL (US);
Wayne W. Y. Eng, League City, TX (US);
Guang-chung Lee, Houston, TX (US);
Ian Sinclair, Warrington, GB;
Rian Reyneke, Katy, TX (US);
Michael Foral, Aurora, IL (US);
Christos G. Papadopoulos, Naperville, IL (US);
Jeffrey S. Logsdon, Naperville, IL (US);
Wayne W. Y. Eng, League City, TX (US);
Guang-Chung Lee, Houston, TX (US);
Ian Sinclair, Warrington, GB;
Ineos USA LLC, Lisle, IL (US);
Abstract
This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, and the bottoms liquid of a C2 distributor column feeds a deethanizer column. The C2 distributor column utilizes a conventional reboiler. The top of the ethylene distributor is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor feeds a C2 splitter column. The ethylene distributor column utilizes a conventional reboiler. The deethanizer and C2 splitter columns are also thermally coupled and operated at a substantially lower pressure than the C2 distributor column, the ethylene distributor column, and the demethanizer column. Alternatively, a hydrocarbon feed enters a deethanizer column. The top of the deethanizer is thermally coupled to an ethylene distributor column, and the ethylene distributor column utilizes a conventional reboiler. The top of the ethylene distributor column is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor column feeds a C2 splitter column. The C2 splitter column operates at a pressure substantially lower than the ethylene distributor column, the demethanizer column, and the deethanizer column.